计算: ( 1 2 ) - 1 - | - 3 | + 12 + ( 1 - π ) 0 .
计算: (1)(2)
计算: (1);(2); (3); (4); (5);(6).
计算: (1);(2).
计算: (1);(2)(-6)×5×; (3)(-4)×7×(-1)×(-0.25);(4)